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AgentCompany/builtin-skills/Video-maker/remotion-best-practices/rules/3d.md
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ZacharyZhang-NY e74dafcd36 Silence render-disposed spam, unbreak bundled skills, drop board wake
Three independently ugly bugs that all fed the same log flood:

* Electron's `WebFrameMain.send` writes every "Render frame was disposed"
  to stderr via `console.error`. When the worker fans a second
  agent-event past a reloading renderer, we produced thousands of
  identical lines and stalled the main loop on stderr I/O. Added a
  `mainFrame.detached` guard so the send is short-circuited before
  Electron's own catch block fires, and installed a targeted filter in
  `suppress-warnings.ts` (now actually imported from the entry point)
  so the specific `console.error("Error sending from webFrameMain:"…)`
  noise never reaches the terminal. Any other payload still surfaces.

* `dispatchAgentMessage` accepted the human-reader sentinel as a wake
  target when an agent replied to `__board__` — `wakeAgentIfPossible`
  then called `db.getAgent("__board__")`, threw, and the dispatcher
  kept repeating on every send. Strip `HUMAN_SENDER_ID` at
  `resolveMessageWakeTargets`, and keep a defense-in-depth guard in the
  heartbeat so a stray caller (future automation fan-out) cannot
  reintroduce the crash.

* Pi's skills loader rejects any SKILL.md whose frontmatter `name`
  diverges from its parent directory. The four bundled `my-writing-style`
  copies declared `name: writing-style-skill`, so every install emitted
  a warning and dropped the skill. They also lived as orphan gitlinks
  (mode 160000 without .gitmodules), and the global `*.md` gitignore
  hid every other SKILL.md from version control. Fixed the frontmatter
  to match the dir, converted the dangling submodules to plain trees,
  and allowlisted `builtin-skills/**/*.md` so a fresh clone carries the
  catalogue instead of silently losing it.
2026-04-20 08:13:48 -04:00

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Markdown

---
name: 3d
description: 3D content in Remotion using Three.js and React Three Fiber.
metadata:
tags: 3d, three, threejs
---
# Using Three.js and React Three Fiber in Remotion
Follow React Three Fiber and Three.js best practices.
Only the following Remotion-specific rules need to be followed:
## Prerequisites
First, the `@remotion/three` package needs to be installed.
If it is not, use the following command:
```bash
npx remotion add @remotion/three # If project uses npm
bunx remotion add @remotion/three # If project uses bun
yarn remotion add @remotion/three # If project uses yarn
pnpm exec remotion add @remotion/three # If project uses pnpm
```
## Using ThreeCanvas
You MUST wrap 3D content in `<ThreeCanvas>` and include proper lighting.
`<ThreeCanvas>` MUST have a `width` and `height` prop.
```tsx
import { ThreeCanvas } from "@remotion/three";
import { useVideoConfig } from "remotion";
const { width, height } = useVideoConfig();
<ThreeCanvas width={width} height={height}>
<ambientLight intensity={0.4} />
<directionalLight position={[5, 5, 5]} intensity={0.8} />
<mesh>
<sphereGeometry args={[1, 32, 32]} />
<meshStandardMaterial color="red" />
</mesh>
</ThreeCanvas>;
```
## No animations not driven by `useCurrentFrame()`
Shaders, models etc MUST NOT animate by themselves.
No animations are allowed unless they are driven by `useCurrentFrame()`.
Otherwise, it will cause flickering during rendering.
Using `useFrame()` from `@react-three/fiber` is forbidden.
## Animate using `useCurrentFrame()`
Use `useCurrentFrame()` to perform animations.
```tsx
const frame = useCurrentFrame();
const rotationY = frame * 0.02;
<mesh rotation={[0, rotationY, 0]}>
<boxGeometry args={[2, 2, 2]} />
<meshStandardMaterial color="#4a9eff" />
</mesh>;
```
## Using `<Sequence>` inside `<ThreeCanvas>`
The `layout` prop of any `<Sequence>` inside a `<ThreeCanvas>` must be set to `none`.
```tsx
import { Sequence } from "remotion";
import { ThreeCanvas } from "@remotion/three";
const { width, height } = useVideoConfig();
<ThreeCanvas width={width} height={height}>
<Sequence layout="none">
<mesh>
<boxGeometry args={[2, 2, 2]} />
<meshStandardMaterial color="#4a9eff" />
</mesh>
</Sequence>
</ThreeCanvas>;
```